Assessment Statements
It is the amount of work done per unit charge. The potential difference across a resistance is the amount of electrical energy converted to heat, per unit charge. The unit is the volt, which is a scalar quantity.
5.1.3 - Define the electronvolt.
Energy one electron would feel going through 1 volt
"Radiation Protection Glossary." Electron Volt: Of Safety Terms and Definitions. Ionactive Consulting, n.d. Web. 03 Feb. 2014.
5.1.5 - Define electric current.
Flow of charge and is measured in amps (coulombs per second).
5.1.6 - Define resistance.
Rate at which charge can flow through a conductor.
Resistors
"Electrical Resistance." Physics Help, Learn Physics, Physics Tutor. NCS Pearson. Web. 03 Feb. 2014.
5.1.8 - State Ohm's law
V = IR
V = Voltage (volts)
I = Current (amps)
R = Resistance (ohms)
V = Voltage (volts)
I = Current (amps)
R = Resistance (ohms)
Storr, Wayne. "Ohms Law." Tutorial and Power in Electrical Circuits. Basic Electronic Tutorials. Web. 03 Feb. 2014.
5.1.9 - Compare ohmic and non-ohmic behavior.
Ohmic conductor obeys the Ohm's Law (V=IR), which means that the potential difference is proportional to current. Non-ohmic conductor doesn't obey Ohm's Law.
5.2.1 - Define electromotive force (emf).
Amount of chemical energy converted to electrical energy, per unit charge. Unit is the volt (v).
5.2.2 - Describe the concept of internal resistance
Resistance of the cell. As current flows through internal resistance, some energy is converted from electrical to heat inside the cell.
A perfect battery has no internal resistance.
A perfect battery has no internal resistance.
"Commercial/Industrial Energy Efficiency: Electric Cell - Internal Resistance of Battery."Commercial/industrial Energy Efficiency: Electric Cell - Internal Resistance of Battery. Web. 03 Feb. 2014.